pub trait AsyncTransportEngine<T: Data + PipelineIO, U: Data + PipelineIO>:
AsyncEngine<T, U, Error>
+ Send
+ Sync
+ 'static { }pub trait AsyncTransportEngine<T: Data + PipelineIO, U: Data + PipelineIO>:
AsyncEngine<T, U, Error>
+ Send
+ Sync
+ 'static { }